Augustine Fla to San Diego Calif – Erected and dedicated by the exchange club of St. Augustine – A.D. 1928". From St. Augustine, the trail goes North along San Marcos, US 1's business route, and travels up U.S. Highway 1 to Jacksonville, then turning west, generally follows U.S. Highway 90. Throughout Northern Florida from Jacksonville, the Old Spanish Trail follows either U.S. Highway 90 or local streets that used to be part of US 90, many of which are designated as State Road 10A. West of Monticello, the OST follows SR-158, SR-154, and Old St. Augustine Road into Tallahassee. The trail enters Tallahassee on Lafayette Street, which once connected directly to Monroe Street but now is cut off by the Apalachee Parkway/US-27. An older route of the Trail went North along Monroe to Brevard Street, then west along Brevard to Bainbridge Road, following Bainbridge to Havana. The trail was later aligned to follow US-27 into Havana, a grade that once carried US-90 as well. From Havana, the trail continues West on Havana Highway/SR 12 to Quincy where it went left onto Madison Street and then right on Jefferson Street to rejoin US-90. At Sneads, the trail follows SR-10A through town and bears left onto a road signed 'Old Spanish Trl'. The trail heads West along this route to State Road 71 and rejoins US-90. East of Milton, a portion of the OST exists as a red brick road paralleling US 90. Portions of the road are drivable, signed Red Brick Rd. and Old Spanish Trail, heading into a residential area and dead-ending at a tributary to the Blackwater River where it is assumed a bridge once carried traffic into town. Alabama The short trip through Alabama's Mobile Bay region closely follows US-90 with a few exceptions. Between Elsanor and Loxley, the trail traveled through Rosinton prior to the establishment of the U.S. Highway System, and continued West along Alabama County Road 64 to Daphne where a ferry once carried traffic into Mobile. Mississippi In Mississippi, the OST travels along US-90 until Pass Christian where it turned right to head North on Henderson Ave to De Lisle, then West along Kiln Delisle Road to Kiln. At Kiln, the OST continued West to the ghost-town of Logtown, Mississippi, although the road connecting those two towns has been partially lost to the Bayou. That route likely consisted of portions of the Bayou La